city_gdp = [
    [43760.7, 41540.9],
    [3430.8, 3285.6]
]
i = 0
while i < len(city_gdp):
    j = 0
    while j < len(city_gdp[i]):
        print("GDP数据:", city_gdp[i][j])
        j = j + 1
    i = i + 1
